I don’t think I have this on the latest 6.8 RC. I have one of the RDNA 3 dedicated cards as well. Hope they get it resolved either way.
If helps in the meantime, I think you can often TTY switch in order to restart the display signal. Ctrl + Alt + F3/F4 should get you a new console. Then switch back to your desktop with Ctrl + Alt + F1/F2 (the right one may depend on your distro.
This gets my display fixed when it gets any kind of funky 99% of the time. Sometimes it takes a few tries